| 摘要 |
An improved, helix appliance for linear bodies has a locking means disposed at one end thereof to impede removal of the appliance from the linear body by unauthorized persons. The locking means includes a strap which encircles the appliance at the end adjacent to the dead end or other anchoring device. When the appliance is slid on the linear body over the dead end attached to the anchoring device, it expands and engages the encircling locking means thereby requiring tools to effect its removal. |
